EP3592230A1 - Apparatus and method for imaging blood in a target region of tissue - Google Patents
Apparatus and method for imaging blood in a target region of tissueInfo
- Publication number
- EP3592230A1 EP3592230A1 EP18713138.8A EP18713138A EP3592230A1 EP 3592230 A1 EP3592230 A1 EP 3592230A1 EP 18713138 A EP18713138 A EP 18713138A EP 3592230 A1 EP3592230 A1 EP 3592230A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spectral range
- light
- tissue
- image data
- target region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14558—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters by polarisation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14546—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring analytes not otherwise provided for, e.g. ions, cytochromes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4887—Locating particular structures in or on the body
- A61B5/489—Blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/04—Constructional details of apparatus
- A61B2560/0431—Portable apparatus, e.g. comprising a handle or case
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/04—Arrangements of multiple sensors of the same type
- A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
- A61B5/6898—Portable consumer electronic devices, e.g. music players, telephones, tablet computers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
- G03B15/03—Combinations of cameras with lighting apparatus; Flash units
- G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30101—Blood vessel; Artery; Vein; Vascular
- G06T2207/30104—Vascular flow; Blood flow; Perfusion
Definitions
- a method of imaging blood within a target region of tissue comprising the steps of: capturing image data associated with at least a portion of a target region of tissue at a first spectral range; capturing image data associated with at least the portion of a target region of tissue at a second spectral range, wherein the absorptivity by blood of light having the first spectral range is less than the absorptivity by blood of light having the second spectral range, wherein the image data associated with at least a portion of a target region of tissue at a first spectral range and the image data associated with at least the portion of a target region of tissue at a second spectral range are captured contemporaneously; and processing the image data captured at the first spectral range and the image data captured at the second spectral range to generate compound image data associated with an amount of blood within the target tissue, wherein the second spectral range corresponds to a spectral range associated with green light.
- the apparatus 2 comprises a support structure in the form of a support frame 4 having a base 6 on which the hand 7 is placed, walls 8, 10 which extend upwardly from the base 6 and an equipment support platform 12.
- the support platform 12 extends horizontally from one wall 8 to the other wall 10 and is located above the base 6 and spaced away from the base 6 by a suitable distance. In the embodiment shown, the support platform 12 is spaced from the base 6 by 30cm.
- the support platform 12 may be spaced from the base 6 by between 5cm and 100cm, such as between 20cm and 50cm in accordance with requirements such as a requirement to keep a target region of tissue within a focal range of a camera module, as described below.
- a scale having bands lco, lei , Ic2, Ic3, Ic4 for different lc values is used to distinguish between areas having lowest lc values lco (i.e. low blood concentration) and areas having highest lc values Ic4 (i.e. high blood concentration). Areas in which high and low concentrations of blood are present are therefore easy to identify within the image.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1703771.4A GB201703771D0 (en) | 2017-03-09 | 2017-03-09 | Apparatus and method |
GBGB1703772.2A GB201703772D0 (en) | 2017-03-09 | 2017-03-09 | Apparatus and method |
PCT/EP2018/055945 WO2018162732A1 (en) | 2017-03-09 | 2018-03-09 | Apparatus and method for imaging blood in a target region of tissue |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3592230A1 true EP3592230A1 (en) | 2020-01-15 |
Family
ID=61768251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18713138.8A Pending EP3592230A1 (en) | 2017-03-09 | 2018-03-09 | Apparatus and method for imaging blood in a target region of tissue |
Country Status (3)
Country | Link |
---|---|
US (2) | US11324424B2 (en) |
EP (1) | EP3592230A1 (en) |
WO (1) | WO2018162732A1 (en) |
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US11324424B2 (en) | 2017-03-09 | 2022-05-10 | Smith & Nephew Plc | Apparatus and method for imaging blood in a target region of tissue |
CA3059516A1 (en) | 2017-04-11 | 2018-10-18 | Smith & Nephew Plc | Component positioning and stress relief for sensor enabled wound dressings |
US11791030B2 (en) | 2017-05-15 | 2023-10-17 | Smith & Nephew Plc | Wound analysis device and method |
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